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Overview
overview
7Static
static
323c707f9cc...1N.exe
windows7-x64
723c707f9cc...1N.exe
windows10-2004-x64
7$PLUGINSDI...ns.dll
windows7-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$TEMP/VVSNInst.exe
windows7-x64
7$TEMP/VVSNInst.exe
windows10-2004-x64
7$WINDIR/Sy...ms.dll
windows7-x64
3$WINDIR/Sy...ms.dll
windows10-2004-x64
3$WINDIR/Sy...ax.dll
windows7-x64
3$WINDIR/Sy...ax.dll
windows10-2004-x64
3Arcade!.exe
windows7-x64
3Arcade!.exe
windows10-2004-x64
3uninst.exe
windows7-x64
7uninst.exe
windows10-2004-x64
7Analysis
-
max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
25/09/2024, 23:55
Static task
static1
Behavioral task
behavioral1
Sample
23c707f9cc1a222d593738b5fcaf9d06da19104b83be91788c879f134800a851N.exe
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral2
Sample
23c707f9cc1a222d593738b5fcaf9d06da19104b83be91788c879f134800a851N.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral3
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral4
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral5
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral6
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral7
Sample
$TEMP/VVSNInst.exe
Resource
win7-20240708-en
windows7-x64
Behavioral task
behavioral8
Sample
$TEMP/VVSNInst.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral9
Sample
$WINDIR/System32/dsaoms.dll
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral10
Sample
$WINDIR/System32/dsaoms.dll
Resource
win10v2004-20240910-en
windows10-2004-x64
Behavioral task
behavioral11
Sample
$WINDIR/System32/wkcajax.dll
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral12
Sample
$WINDIR/System32/wkcajax.dll
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral13
Sample
Arcade!.exe
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral14
Sample
Arcade!.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
Behavioral task
behavioral15
Sample
uninst.exe
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral16
Sample
uninst.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
General
-
Target
$WINDIR/System32/wkcajax.dll
-
Size
232KB
-
MD5
21e5ab0214714983584031e78c763aae
-
SHA1
67d96799572b2d847561d1dc5c5db639c3abb085
-
SHA256
2dd855c3a2d5acec7cf1daf44284576e3d97ae8891bdf15480ed530c0863855f
-
SHA512
2807cd740c1d50de1f6e26c869c466a503181f276832c1057c8269d50abaa3a7fc0769479d3357962dd63bcd57541ccf9a3fb31314d874365143e0442f7114cf
-
SSDEEP
3072:YoyLNAAt8jV5FEJ1cejHUDjE3tNtIhprSM33UCNneRwN2j821+RA3q3pIZ:svcMWbUCNneRwg32SZ
Malware Config
Signatures
-
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
Modifies registry class 45 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wkajaxc.clsdll\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ = "clsdll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\wkajaxc.clsdll\ = "wkajaxc.clsdll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\Implemented Categories regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib\ = "{8196B6CB-44E3-45B3-90D6-8541816E7E74}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ = "_clsdll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\VERSION\ = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wkajaxc.clsdll regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib\ = "{8196B6CB-44E3-45B3-90D6-8541816E7E74}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\wkajaxc.clsdll\Clsid\ = "{2CB98AF7-2312-47FF-9E56-917F92C14195}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\ = "wkajaxc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$WINDIR\\System32\\wkcajax.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\VERSION regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\ = "wkajaxc.clsdll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\TypeLib\ = "{8196B6CB-44E3-45B3-90D6-8541816E7E74}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$WINDIR\\System32" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\ProgID\ = "wkajaxc.clsdll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ = "_clsdll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{8196B6CB-44E3-45B3-90D6-8541816E7E74}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$WINDIR\\System32\\wkcajax.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{058A54C7-EAFF-488D-95CA-8A248141C489}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2CB98AF7-2312-47FF-9E56-917F92C14195}\ProgID regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30 PID 1732 wrote to memory of 1852 1732 regsvr32.exe 30
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\$WINDIR\System32\wkcajax.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\$WINDIR\System32\wkcajax.dll2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:1852
-